Gupta, Anjali; Galeazzi, M. & Ursino, E. (2010 m. gegužė), "Detection and Characterization of the Warm-Hot Intergalactic Medium", Bulletin of the American Astronomical Society41: 908, Bibcode: {{{bibcode}}}
Chuss, David T. (2008 m. birželio 26 d), Cosmic Background Explorer, NASA Goddard Space Flight Center. Nuoroda tikrinta 27 balandžio 2013
science.nasa.gov
Dark Energy, Dark Matter. Nuoroda tikrinta 2013 m. gegužės 31 d, "It turns out that roughly 68% of the Universe is dark energy. Dark matter makes up about 27%."